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https://www.readbyqxmd.com/read/29785020/glypican-1-immunohistochemistry-does-not-separate-mesothelioma-from-pulmonary-adenocarcinoma
#1
Kenrry Chiu, Lawrence Lee, Simon Cheung, Andrew M Churg
Immunohistochemistry (IHC) is used to help differentiate pleural mesothelioma from pulmonary adenocarcinoma in pleural biopsies and cytology specimens of pleural effusions due to overlapping morphologic features between these two malignancies. The aim of this study is to evaluate IHC glypican-1, a recently proposed marker for epithelioid mesothelioma, in our cohort of mesotheliomas and pulmonary adenocarcinoma. Tissue microarrays with duplicate cores from 33 cases of mesotheliomas (28 epithelioid type and five sarcomatoid type) and 21 cases of pulmonary adenocarcinoma were stained with glypican-1 antibody...
May 21, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29775666/the-effect-of-syndecan-4-and-glypican-1-knockdown-on-the-proliferation-and-differentiation-of-turkey-satellite-cells-differing-in-age-and-growth-rates
#2
Sandra G Velleman, Daniel L Clark, Jeffrey R Tonniges
Posthatch skeletal muscle growth requires myogenic satellite cells and the dynamic expression of cell membrane-associated proteins. The membrane associated heparan sulfate proteoglycans, syndecan-4 and glypican-1, link the satellite cell niche to the intracellular environment. Sydnecan-4 and glypican-1 are differentially expressed with age in turkey satellite cells and their over-expression impacts both satellite cell proliferation and differentiation, but their effect on satellite cells from lines with different growth potentials is not known...
May 15, 2018: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/29750031/glypican-1-antibody-conjugated-gd-au-nanoclusters-for-fi-mri-dual-modal-targeted-detection-of-pancreatic-cancer
#3
Xin Huang, Chengqi Fan, Huanhuan Zhu, Wenjun Le, Shaobin Cui, Xin Chen, Wei Li, Fulei Zhang, Yong Huang, Donglu Sh, Zheng Cui, Chengwei Shao, Bingdi Chen
Introduction: Pancreatic cancer (PC) has a poor prognosis with high mortality, due to the lack of effective early diagnostic and prognostic tools. Materials and methods: In order to target and diagnose PC, we developed a dual-modal imaging probe using Glypican-1 (GPC-1) antibody conjugated with Gd-Au nanoclusters (NCs; Gd-Au-NC-GPC-1). GPC-1 is a type of cell surface heparan sulfate proteoglycan, which is often highly expressed in PC. The probe was successfully prepared with a hydrodynamic diameter ranging from 13...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29721179/glypican-1-is-enriched-in-circulating-exosomes-in-pancreatic-cancer-and-correlates-with-tumor-burden
#4
Adam E Frampton, Mireia Mato Prado, Elena López-Jiménez, Ana Belen Fajardo-Puerta, Zaynab A R Jawad, Phillip Lawton, Elisa Giovannetti, Nagy A Habib, Leandro Castellano, Justin Stebbing, Jonathan Krell, Long R Jiao
Background: Glypican-1 (GPC1) is expressed in pancreatic ductal adenocarcinoma (PDAC) cells and adjacent stromal fibroblasts. Recently, GPC1 circulating exosomes (crExos) have been shown to be able to detect early stages of PDAC. In this study, we investigated the usefulness of crExos GPC1 as a biomarker for PDAC. Methods: Plasma was obtained from patients with benign pancreatic disease ( n = 16) and PDAC ( n = 27) prior to pancreatectomy, and crExos were isolated by ultra-centrifugation...
April 10, 2018: Oncotarget
https://www.readbyqxmd.com/read/29672570/detection-of-glypican-1-gpc-1-expression-in-urine-cell-sediments-in-prostate-cancer
#5
Douglas H Campbell, Maria E Lund, Aline L Nocon, Paul J Cozzi, Mark Frydenberg, Paul De Souza, Belinda Schiller, Jennifer L Beebe-Dimmer, Julie J Ruterbusch, Bradley J Walsh
While measurement of serum prostate specific antigen (PSA) is an important screening tool for prostate cancer, new biomarkers are necessary for better discrimination between presence and absence of disease. The MIL-38 monoclonal antibody is specific for the membrane glycoprotein glypican 1 (GPC-1) and binds to prostate cancer tissue. Urine is known to be a source of cellular material. Thus, we hypothesized that detection of GPC-1 in urine cellular material may identify individuals with prostate cancer. Urine samples from patients with prostate cancer, benign prostatic hyperplasia (BPH), or normal controls were collected and cell sediments prepared...
2018: PloS One
https://www.readbyqxmd.com/read/29570265/integrated-analysis-of-exosomal-protein-biomarkers-on-alternating-current-electrokinetic-chips-enables-rapid-detection-of-pancreatic-cancer-in-patient-blood
#6
Jean M Lewis, Ankit D Vyas, Yuqi Qiu, Karen S Messer, Rebekah White, Michael J Heller
Pancreatic ductal adenocarcinoma (PDAC) typically has non-specific symptoms, and is often found too late to treat. Because diagnosis of PDAC involves complex, invasive, and expensive procedures, screening populations at increased risk will depend on developing rapid, sensitive, specific, and cost-effective tests. Exosomes, which are nanoscale vesicles shed into blood from tumors, have come into focus as valuable entities for non-invasive liquid biopsy diagnostics. However, rapid capture and analysis of exosomes with their protein and other biomarkers have proven difficult...
March 23, 2018: ACS Nano
https://www.readbyqxmd.com/read/29567548/analysis-of-proteoglycan-expression-in-human-dental-pulp
#7
Ana Carla Raphaelli Nahás-Scocate, Gabrielle Ferrante Alves de Moraes, Helena Bonciani Nader, Carolina Meloni Vicente, Leny Toma
Proteoglycans are glycosylated proteins which have covalently attached highly anionic glycosaminoglycans. They can be located on the extracellular matrix, cell membrane or intracellular granules. To date, few studies have reported the presence of proteoglycans in human dental pulp. OBJECTIVE: The aim of this study was, therefore, to analyze the expression of lumican, versican and glypican proteoglycans in deciduous and permanent human dental pulp by real-time polymerase chain reaction (q-PCR) and immunofluorescence...
March 10, 2018: Archives of Oral Biology
https://www.readbyqxmd.com/read/29408503/common-traffic-routes-for-imported-spermine-and-endosomal-glypican-1-derived-heparan-sulfate-in-fibroblasts
#8
Fang Cheng, Lars-Åke Fransson, Katrin Mani
Import of the polyamine spermine from the extracellular environment depends on the presence of cell surface heparan sulfate proteoglycans, such as glypican-1. This proteoglycan is internalized by endocytosis, releases its heparan sulfate chains in endosomes by a nitric oxide-, copper- and amyloid precursor protein-dependent mechanism, then penetrates the membrane and is transported to the nucleus and then to autophagosomes. This process is spontaneous or induced by ascorbate depending on the growth-state of the cell...
March 15, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29327712/glypican-1-immunohistochemistry-is-a-novel-marker-to-differentiate-epithelioid-mesothelioma-from-lung-adenocarcinoma
#9
Vishwa Jeet Amatya, Kei Kushitani, Yuichiro Kai, Rui Suzuki, Yoshihiro Miyata, Morihito Okada, Yukio Takeshima
Histological morphology alone is not sufficient for the pathological diagnosis of malignant mesothelioma. Positive and negative immunohistochemical markers are necessary to differentiate it from lung adenocarcinoma. As calretinin and D2-40, the recognized positive markers of mesothelioma, are expressed in lung adenocarcinoma to some extent, novel markers with high specificity are desirable. In this study, we investigated the applicability of glypican-1 immunohistochemistry to differentiate epithelioid mesothelioma from lung adenocarcinoma...
January 12, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29322326/heparan-sulfate-accumulation-and-perlecan-hspg2-up-regulation-in-tumour-tissue-predict-low-relapse-free-survival-for-patients-with-glioblastoma
#10
Galina M Kazanskaya, Alexandra Y Tsidulko, Alexander M Volkov, Roman S Kiselev, Anastasia V Suhovskih, Vyacheslav V Kobozev, Alexei S Gaytan, Svetlana V Aidagulova, Alexei L Krivoshapkin, Elvira V Grigorieva
Glycosaminoglycans are major components of brain extracellular matrix (ECM), although heparan sulfate (HS) contribution in brain physiology and carcinogenesis remains underinvestigated. This study examined HS content and distribution in glioblastoma multiforme (GBM) tissues in the context of potential molecular mechanisms underlying its deregulation in brain tumours. Totally, 42 tissue samples and paraffin-embedded tissues for 31 patients with different prognosis were investigated. HS expression was demonstrated in 50-55% of the GBM tumours by immunohistochemistry (IHC), while almost no HS content was detected in the surrounding paratumourous brain tissues...
March 2018: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/29245923/evi1-modulates-oncogenic-role-of-gpc1-in-pancreatic-carcinogenesis
#11
Mariko Tanaka, Shumpei Ishikawa, Tetsuo Ushiku, Teppei Morikawa, Takayuki Isagawa, Makoto Yamagishi, Hiroyuki Yamamoto, Hiroto Katoh, Kimiko Takeshita, Junichi Arita, Yoshihiro Sakamoto, Kiyoshi Hasegawa, Norihiro Kokudo, Masashi Fukayama
Glypican-1 (GPC1) protein in exosomes was recently identified as a biomarker for the early detection of pancreatic ductal adenocarcinoma (PDAC). Immunohistochemical analyses and in vitro assays were conducted to assess the usefulness of GPC1 as a PDAC biomarker, to reveal the biological role of GPC1 in pancreatic carcinogenesis, and to ascertain the regulation mechanism of GPC1. An aberrant overexpression of GPC1 protein which is usually absent in normal pancreatic duct, was a widespread marker across the full spectrum of human PDAC precursors, PDAC, and pancreatic cancerous stroma...
November 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/29162835/a-signal-amplifiable-biochip-quantifies-extracellular-vesicle-associated-rnas-for-early-cancer-detection
#12
Jiaming Hu, Yan Sheng, Kwang Joo Kwak, Junfeng Shi, Bohao Yu, L James Lee
Detection of extracellular vesicle (EV)-associated RNAs with low expression levels in early-stage cancer remains a challenge and is highly valuable. Here, we report a nanoparticle-based biochip that could capture circulating EVs without isolation, brighten encapsulated RNAs, and amplify fluorescence signals in situ in a single step. We confine catalyzed hairpin DNA circuit (CHDC) in cationic lipid-polymer hybrid nanoparticles (LPHNs) that are tethered on a chip. LPHN features a core-shell-corona structure that facilitates the transfer and mixing of CHDC with EV-associated RNAs when forming the LPHN-EV nanocomplex...
November 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/29081389/toxoplasma-gondii-ron4-binds-to-heparan-sulfate-on-the-host-cell-surface
#13
Hitoshi Takemae, Kyousuke Kobayashi, Tatsuki Sugi, Yongmei Han, Haiyan Gong, Akiko Ishiwa, Frances C Recuenco, Fumi Murakoshi, Ryo Takano, Yuho Murata, Kisaburo Nagamune, Taisuke Horimoto, Hiroomi Akashi, Kentaro Kato
Toxoplasma gondii rhoptry neck protein 4 (TgRON4) is a component of the moving junction, a key structure for host cell invasion. We previously showed that host cellular β-tubulin is a binding partner of TgRON4 in the invasion process. Here, to identify other binding partners of TgRON4 in the host cell, we examined the binding of TgRON4 to components of the host cell surface. TgRON4 binds to various mammalian cells, but this binding disappeared in glycosaminoglycan- and heparan sulfate-deficient CHO cells and after heparitinase treatment of mammalian cells...
April 2018: Parasitology International
https://www.readbyqxmd.com/read/29055044/anti-glypican-1-antibody-drug-conjugate-exhibits-potent-preclinical-antitumor-activity-against-glypican-1-positive-uterine-cervical-cancer
#14
Satoko Matsuzaki, Satoshi Serada, Kosuke Hiramatsu, Satoshi Nojima, Shinya Matsuzaki, Yutaka Ueda, Tomoharu Ohkawara, Seiji Mabuchi, Minoru Fujimoto, Eiichi Morii, Kiyoshi Yoshino, Tadashi Kimura, Tetsuji Naka
Glypican-1 (GPC1) is highly expressed in solid tumors, especially squamous cell carcinomas (SCCs), and is thought to be associated with disease progression. We explored the use of a GPC1-targeted antibody-drug conjugate (ADC) as a novel treatment for uterine cervical cancer. On immunohistochemical staining, high expression levels of GPC1 were detected in about 50% of uterine cervical cancer tissues and also in a tumor that had relapsed after chemoradiotherapy. Novel anti-GPC1 monoclonal antibodies were developed, and clone 01a033 was selected as the best antibody for targeted delivery of the cytotoxic agent monomethyl auristatin F (MMAF) into GPC1-positive cells...
March 1, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28893506/cytochrome-b561-copper-%C3%AE-cleaved-amyloid-precursor-protein-and-niemann-pick-c1-protein-are-involved-in-ascorbate-induced-release-and-membrane-penetration-of-heparan-sulfate-from-endosomal-s-nitrosylated-glypican-1
#15
Fang Cheng, Lars-Åke Fransson, Katrin Mani
Ascorbate-induced release of heparan sulfate from S-nitrosylated heparan sulfate proteoglycan glypican-1 takes place in endosomes. Heparan sulfate penetrates the membrane and is transported to the nucleus. This process is dependent on copper and on expression and processing of the amyloid precursor protein. It remains unclear how exogenously supplied ascorbate can generate HS-anMan in endosomes and how passage through the membrane is facilitated. Here we have examined wild-type, Alzheimer Tg2576 and amyloid precursor protein (-/-) mouse fibroblasts and human fetal and Niemann-Pick C1 fibroblasts by using deconvolution immunofluorescence microscopy, siRNA technology and [S35 ]sulfate-labeling, vesicle isolation and gel chromatography...
November 15, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28700908/endothelial-glycocalyx-mediated-nitric-oxide-production-in-response-to-selective-afm-pulling
#16
Anne Marie W Bartosch, Rick Mathews, John M Tarbell
Nitric oxide (NO) is a regulatory molecule in the vascular system and its inhibition due to endothelial injury contributes to cardiovascular disease. The glycocalyx is a thin layer of glycolipids, glycoproteins, and proteoglycans on the surface of mammalian epithelial cells. Extracellular forces are transmitted through the glycocalyx to initiate intracellular signaling pathways. In endothelial cells (ECs), previous studies have shown the glycocalyx to be a significant mediator of NO production; degradation of the endothelial glycocalyx layer (EGL) drastically reduces EC production of NO in response to fluid shear stress...
July 11, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28699397/-glioblastoma-exosomes-for-therapeutic-angiogenesis-in-peripheral-ischemia
#17
Anthony Monteforte, Brian Lam, Michael B Sherman, Kayla Henderson, Andrew D Sligar, Adrianne Spencer, Brian Tang, Andrew K Dunn, Aaron B Baker
Peripheral ischemia as a result of occlusive vascular disease is a widespread problem in patients older than the age of 65. Angiogenic therapies that can induce microvascular growth have great potential for providing a long-lasting solution for patients with ischemia and would provide an appealing alternative to surgical and percutaneous interventions. However, many angiogenic therapies have seen poor efficacy in clinical trials, suggesting that patients with long-term peripheral ischemia have considerable therapeutic resistance to angiogenic stimuli...
November 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28648641/glypican-based-drug-releasing-titania-implants-to-regulate-bmp2-bioactivity-as-a-potential-approach-for-craniosynostosis-therapy
#18
Manpreet Bariana, Prem Dwivedi, Sarbin Ranjitkar, John A Kaidonis, Dusan Losic, Peter J Anderson
Advances in molecular biology and nanomedicine based therapies hold promise to obviate the need of multiple surgical interventions (associated with current management) in craniosynostosis by preventing bone re-ossification. One such adjunctive therapy involves application of glypicans 1 and 3 (GPC1 and GPC3) that are BMP inhibitors implicated in downregulating the BMP2 activity in prematurely fusing sutures. Electrochemically anodized Titania nanotube (TNT) arrays have been recognized as a promising localized, long-term drug delivery platform for bone-related therapies...
June 23, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28602885/high-expression-of-glypican-1-predicts-dissemination-and-poor-prognosis-in-glioblastomas
#19
Taiichi Saito, Kazuhiko Sugiyama, Seiji Hama, Fumiyuki Yamasaki, Takeshi Takayasu, Ryo Nosaka, Shumpei Onishi, Yoshihiro Muragaki, Takakazu Kawamata, Kaoru Kurisu
OBJECTIVE: Glioblastoma (GBM) relapses locally or in a disseminated pattern and is highly resistant to chemoradiotherapy. Although dissemination is associated with poor prognosis for patients with GBM, the clinicopathologic factors that promote dissemination have not been elucidated. Glypican-1 (GPC-1) is a heparin sulfate proteoglycan that is attached to the extracytoplasmic surface of the cell membrane and regulates cell motility. The aim of this study was to determine whether GPC-1 expression correlated with GBM dissemination and patient prognosis...
September 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28462474/brain-heparan-sulphate-proteoglycans-are-altered-in-developing-foetus-when-exposed-to-in-utero-hyperglycaemia
#20
M S Sandeep, C D Nandini
In-utero exposure of foetus to hyperglycaemic condition affects the growth and development of the organism. The brain is one of the first organs that start to develop during embryonic period and glycosaminoglycans (GAGs) and proteoglycans (PGs) are one of the key molecules involved in its development. But studies on the effect of hyperglycaemic conditions on brain GAGs/PGs are few and far between. We, therefore, looked into the changes in brain GAGs and PGs at various developmental stages of pre- and post-natal rats from non-diabetic and diabetic mothers as well as in adult rats induced with diabetes using a diabetogenic agent, Streptozotocin...
August 2017: Metabolic Brain Disease
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